<template>
  <div class="comment-container">
    <div class="comment-list" v-loading="listLoading && listQuery.currentPage==1" ref="infiniteBody">
      <template v-if="list.length">
        <div v-for="(item,i) in list" :key="i" class="item">
          <div class="head">
            <el-avatar :size="40" :src="define.comUrl + item.creatorUserHeadIcon" class="avatar" />
            <p class="username">{{item.creatorUser}}</p>
            <el-link :underline="false" class="del-btn" @click="delComment(item.id,i)" type="danger" v-if="item.isDel">删除</el-link>
            <span class="time">{{item.creatorTime|toDate()}}</span>
          </div>
          <div class="content">
            <p class="text">{{item.text}}</p>
            <div class="img-list" v-if="item.imageList.length">
              <el-image :src="define.comUrl+cItem.url" class="img-item" v-for="(cItem,ci) in item.imageList" :key="ci" :preview-src-list="getImgList(item.imageList)" :z-index="10000">
              </el-image>
            </div>
            <div class="file-List" v-if="item.fileList.length">
              <JnpfUploadFile v-model="item.fileList" detailed disabled></JnpfUploadFile>
            </div>
          </div>
        </div>
      </template>
      <el-empty description="暂无数据" :image-size="120" v-else></el-empty>
    </div>
    <el-dialog title="流程评论" :visible.sync="dialogVisible" :close-on-click-modal="false" class="JNPF-dialog JNPF-dialog_center" lock-scroll append-to-body width="600px">
      <el-form :model="dataForm" :rules="dataRule" ref="dataForm" label-width="0">
        <el-form-item prop="text">
          <el-input v-model="dataForm.text" placeholder="请输入评论" type="textarea" :rows="4" />
        </el-form-item>
        <el-form-item>
          <el-upload :action="define.comUploadUrl+'/annexpic'" :headers="uploadHeaders" ref="elUploadImg" :on-success="handleImgSuccess" multiple :show-file-list="false" accept="image/*" :before-upload="beforeImgUpload" :on-exceed="handleImgExceed" :limit="9" class="upload-btn">
            <el-button size="small" icon="el-icon-picture">图片</el-button>
          </el-upload>
          <el-button size="small" icon="el-icon-upload" @click="uploadFile">附件</el-button>
        </el-form-item>
        <el-form-item prop="image" v-if="dataForm.image.length">
          <div class="img-list">
            <div class="img-item" v-for="(item,i) in dataForm.image" :key="i">
              <el-image :src="define.comUrl+item.url" class="" :preview-src-list="getImgList(dataForm.image)" :z-index="100">
              </el-image>
              <div class="badge" @click.stop="handleImgRemove(i)">
                <i class="el-icon-close"></i>
              </div>
            </div>
          </div>
        </el-form-item>
        <el-form-item prop="file">
          <ul class="el-upload-list el-upload-list el-upload-list--text">
            <li class="el-upload-list__item is-success" v-for="(file,index) in dataForm.file" :key="file.fileId">
              <a class="el-upload-list__item-name">
                <i class="el-icon-paperclip"></i>
                {{file.name}}{{file.fileSize?`（${jnpf.toFileSize(file.fileSize)}）`:''}}
              </a>
              <i class="el-icon-view" title="查看" @click="handleFilePreview(file)"></i>
              <i class="el-icon-download" title="下载" @click="handleFileClick(file)"></i>
              <label class="el-upload-list__item-status-label">
                <i class="el-icon-upload-success el-icon-circle-check"></i>
              </label>
              <i class="el-icon-close" title="删除" @click="handleFileRemove(index)"></i>
            </li>
          </ul>
          <fileUploader ref="fileUploader" :limit="2" :fileSize="50" type="annex" :accept="fileAccept" @fileSuccess="fileSuccess" />
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible=false">{{$t('common.cancelButton')}}
        </el-button>
        <el-button type="primary" @click="addComment()" :loading="btnLoading">
          {{$t('common.confirmButton')}}</el-button>
      </span>
    </el-dialog>
    <Preview :visible.sync="previewVisible" :file="activeFile" />
  </div>
</template>

<script>
  import { getCommentList, createComment, delComment } from '@/api/workFlow/FlowEngine'
  import { getDownloadUrl } from '@/api/common'
  import Preview from '@/components/Jnpf/Upload/Preview'
  import FileUploader from './FileUploader'

  export default {
    name: 'comments',
    components: { Preview, FileUploader },
    props: {
      id: { type: String, default: '' },
    },
    data() {
      return {
        list: [],
        listQuery: {
          currentPage: 1,
          pageSize: 20,
          sort: 'desc',
          sidx: ''
        },
        total: 0,
        listLoading: false,
        btnLoading: false,
        dataRule: {},
        dataForm: {
          text: '',
          file: [],
          image: [],
        },
        dialogVisible: false,
        finish: false,
        uploadHeaders: { Authorization: this.$store.getters.token },
        imgUploading: false,
        previewVisible: false,
        fileAccept: '.xls,.xlsx,.doc,.docx,.pdf,.txt,.ppt,.pptx',
        activeFile: {}
      }
    },
    methods: {
      init() {
        this.list = []
        this.listQuery = {
          currentPage: 1,
          pageSize: 20,
          sort: 'desc',
          sidx: ''
        }
        this.finish = false
        this.initData()
        this.$nextTick(() => {
          this.bindScroll()
        })
      },
      bindScroll() {
        let _this = this,
          vBody = _this.$refs.infiniteBody;
        vBody.addEventListener("scroll", function () {
          if (vBody.scrollHeight - vBody.clientHeight - vBody.scrollTop <= 600 && !_this.listLoading && !_this.finish) {
            _this.listQuery.currentPage += 1
            _this.initData()
          }
        });
      },
      initData() {
        this.listLoading = true
        let query = {
          ...this.listQuery,
          taskId: this.id
        }
        getCommentList(query).then(res => {
          let list = res.data.list.map(o => ({
            ...o,
            fileList: o.file ? JSON.parse(o.file) : [],
            imageList: o.image ? JSON.parse(o.image) : [],
          }))
          if (res.data.list.length < this.listQuery.pageSize) {
            this.finish = true
          }
          this.list = [...this.list, ...list]
          this.total = res.data.pagination.total
          this.listLoading = false
        }).catch(() => {
          this.listLoading = false
        })
      },
      showCommentDialog() {
        this.dialogVisible = true
        this.dataForm.image = []
        this.dataForm.file = []
        this.$nextTick(() => {
          this.$refs.elUploadImg.uploadFiles = []
          this.$refs['dataForm'].resetFields()
        })
      },
      getImgList(list) {
        const newList = list.map(o => this.define.comUrl + o.url)
        return newList
      },
      addComment() {
        this.$refs['dataForm'].validate((valid) => {
          if (valid) {
            this.btnLoading = true
            let query = {
              text: this.dataForm.text,
              file: JSON.stringify(this.dataForm.file),
              image: JSON.stringify(this.dataForm.image),
              taskId: this.id
            }
            createComment(query).then(res => {
              this.$message({
                message: res.msg,
                type: 'success',
                duration: 1500,
                onClose: () => {
                  this.dialogVisible = false
                  this.btnLoading = false
                  this.init()
                }
              })
            }).catch(() => { this.btnLoading = false })
          }
        })
      },
      delComment(id, index) {
        this.$confirm(this.$t('common.delTip'), this.$t('common.tipTitle'), {
          type: 'warning'
        }).then(() => {
          delComment(id).then(res => {
            this.list.splice(index, 1)
            this.$message({
              type: 'success',
              message: res.msg
            })
          })
        }).catch(() => { });
      },
      beforeImgUpload(file) {
        let isRightSize = file.size < 50 * 1024 * 1024
        if (!isRightSize) {
          this.$message.error(`图片大小超过50MB`)
          return isRightSize;
        }
        let isAccept = new RegExp('image/*').test(file.type)
        if (!isAccept) {
          this.$message.error(`请上传图片`)
          return isAccept;
        }
        if (isRightSize && isAccept) this.imgUploading = true
        return isRightSize && isAccept;
      },
      handleImgSuccess(res, file, fileList) {
        if (res.code == 200) {
          this.dataForm.image.push({
            name: file.name,
            fileId: res.data.name,
            url: res.data.url,
            thumbUrl: res.data.thumbUrl,
          })
        } else {
          this.$refs.elUploadImg.uploadFiles.splice(fileList.length - 1, 1)
          fileList.filter(o => o.uid != file.uid)
          this.$message({ message: res.msg, type: 'error', duration: 1500 })
        }
        this.imgUploading = false
      },
      handleImgExceed(files, fileList) {
        this.$message.warning(`当前限制最多可以上传9张图片`)
      },
      handleImgRemove(index) {
        this.dataForm.image.splice(index, 1)
        this.$refs.elUploadImg.uploadFiles.splice(index, 1)
      },
      uploadFile() {
        const isTopLimit = this.dataForm.file.length >= 2
        if (isTopLimit) {
          this.$message.error(`当前限制最多可以上传2个文件`)
          return false
        }
        this.$refs.fileUploader && this.$refs.fileUploader.openUploader()
      },
      fileSuccess(data) {
        const isTopLimit = this.dataForm.file.length >= 2
        if (isTopLimit) {
          this.$message.error(`当前限制最多可以上传2个文件`)
          return false
        }
        this.dataForm.file.push(data)
      },
      handleFileRemove(index) {
        this.dataForm.file.splice(index, 1)
      },
      handleFileClick(file) {
        if (!file.fileId) return
        getDownloadUrl('annex', file.fileId).then(res => {
          this.jnpf.downloadFile(res.data.url, file.name)
        })
      },
      handleFilePreview(file) {
        this.activeFile = file
        this.previewVisible = true
      }
    }
  }
</script>
<style lang="scss" scoped>
  .comment-container {
    height: 100%;
    overflow: hidden;
    .comment-list {
      height: 100%;
      overflow: auto;
      .item {
        padding: 0 30px;
        margin-bottom: 20px;
        .head {
          display: flex;
          align-items: center;
          .avatar {
            flex-shrink: 0;
            margin-right: 20px;
          }
          .username {
            line-height: 40px;
            color: #333;
            flex: 1;
          }
          .head-right {
            flex-shrink: 0;
          }
          .time {
            flex-shrink: 0;
            font-size: 14px;
            color: #666;
            margin-left: 20px;
          }
        }

        .content {
          font-size: 14px;
          padding-left: 60px;
          .text {
            line-height: 30px;
            color: #666;
          }
          .img-list {
            margin-top: 6px;
            .img-item {
              width: 80px;
              height: 80px;
              overflow: hidden;
              margin: 0 6px 6px 0;
              // border: 1px solid #c0ccda;
              border-radius: 6px;
            }
          }
        }
      }
    }
  }
  .JNPF-dialog {
    .upload-btn {
      display: inline-block;
      margin-right: 20px;
    }
    .img-list {
      display: flex;

      .img-item {
        width: 40px;
        height: 40px;
        position: relative;
        margin-right: 10px;
        .el-image {
          width: 100%;
          height: 100%;
        }
        .badge {
          background-color: #f56c6c;
          border-radius: 10px;
          color: #fff;
          display: block;
          font-size: 12px;
          height: 18px;
          width: 18px;
          line-height: 18px;
          text-align: center;
          border: 1px solid #fff;
          position: absolute;
          right: -9px;
          top: -9px;
          cursor: pointer;
          z-index: 10001;
        }
      }
    }
    .el-upload-list__item {
      .el-upload-list__item-name {
        margin-right: 70px;
        .el-icon-paperclip {
          line-height: 25px;
        }
      }
      .el-icon-download {
        display: inline-block;
        position: absolute;
        top: 5px;
        right: 25px;
        cursor: pointer;
        opacity: 0.75;
        color: #606266;
      }
      .el-icon-view {
        display: inline-block;
        position: absolute;
        top: 5px;
        right: 45px;
        cursor: pointer;
        opacity: 0.75;
        color: #606266;
      }
    }
  }
</style>
